Functional Description for the tag XL
General Overview and Information*
The truvami Tag XL device is a powerful and flexible GNSS tracking device that integrates a multi-standard GNSS scanner and passive Wi-Fi MAC address scanner with Bluetooth 5.2 connectivity and sensors such as accelerometer into one compact device. The IP65-rated housing with different mounting options prepares the device for operation in a harsh industrial environment.
Device Initialization and Joining
This overview shows the general the procedure at start-up. In the first step indicated by a short tone.
After this has passed, the device starts to join to the LoRaWAN network, playing a long tone on each join trial. If a network connection is established, the device will play a melody and start to track the asset.
If a join trial fails, the device will retry the join with a join back-off strategy. The device will start to retry at
different intervals. This approach is split into 5 possible cases. In each case, the device will retry to join,
according to Retry Timeout. If a connection could not be established during the specific Case Timeout time,
the device will change the mode to the next higher one, except the last mode 5.
| Case | Retry Timeout | Case Timeout* |
|---|---|---|
| Mode 1 | 1 minute | 15 minutes |
| Mode 2 | 15 minute | 45 mintues |
| Mode 3 | Hour | 24 hours |
| Mode 4 | Day | 7 days |
| Mode 5 | Week | - |
If the device reaches the case Mode 5, it will stay in this case until a LoRawan connection is established. Hence, there are no further interval or timeout updates. The device will weekly try to join the network.
Asset Tracking
The device will track the location periodically after a steady time. If the device is set in motion, it will use a shorter movement time to track the asset periodically. If the motion stops, the device will use the steady time again. In between those periodically tracking intervals, the device will enter the sleep mode which is the lowest possible power mode.
All mentioned device tracking time periods are adjustable.
The device tracks the location with Wi-Fi and GNSS scans and sends the collected data through a gateway to a backend sever. The location is generated by GNSS data and if not available/valid then Wi-Fi data. The server displays the location data on the Semtech LoRa Cloud website.
Device Reset
To reset the device, use a magnet and hold it next to the device at the marked spot.
Device Configurations and Updates
Device Parameters
All device settings are fully configurable over the Semtech LoRa Cloud website.
The device must be joined to the LoRaWAN network in order to change the device settings.
Almanac Update
still in progress, more information will follow